Search found 26 matches

by Joris
Thu Mar 31, 2016 9:00 am
Forum: Valveless pulsejet forum
Topic: Variable frequency valveless pulsejet
Replies: 8
Views: 2606

Re: Variable frequency valveless pulsejet

It's a sketch so it's not to scale, the chains would have to be longer and should not be turned so far that the chain attachments would reach it. The injectors are attached to the intake sleave and the intake to the outtake via the chain. the opposite gears should be linked and the axles should be m...
by Joris
Thu Mar 31, 2016 7:52 am
Forum: Valveless pulsejet forum
Topic: Variable frequency valveless pulsejet
Replies: 8
Views: 2606

Re: Variable frequency valveless pulsejet

You could maybe attach the fuel injectors to the sleeve intakes so the injector depth and intake length vary at the same time. If you rig it right you could also have a sleeve on the exhaust that moves along with them but i don't know whether shortening the intakes and exhaust at the same time would...
by Joris
Wed Mar 30, 2016 8:38 pm
Forum: Valveless pulsejet forum
Topic: Variable frequency valveless pulsejet
Replies: 8
Views: 2606

Re: Variable frequency valveless pulsejet

The trombone one is new to me, the exhaust tube may however not be adjustable if it does run for a longer period of time due to heat expansion. I thought the fit would have to be somewhat tight, i'm not looking to build one myself right now, i'm mixed up in a different project but i do like the idea...
by Joris
Wed Mar 30, 2016 7:14 am
Forum: Valveless pulsejet forum
Topic: Variable frequency valveless pulsejet
Replies: 8
Views: 2606

Re: Variable frequency valveless pulsejet

I don't know the frequency range you would get from regulating gas throughput, in my own experience gas sure does make a difference but it would at max have an amplitude of 20 hertz, i can fiddle with mine to get a more specific range of frequencies. Changing the exhaust/intake length might have som...
by Joris
Fri Mar 25, 2016 8:16 pm
Forum: Valveless pulsejet forum
Topic: Lockwood-H pulsejet with variations will it work?
Replies: 22
Views: 5316

Re: Lockwood-H pulsejet with variations will it work?

I'll give running it hot a go for sure, thanks for the advice!
by Joris
Fri Mar 04, 2016 8:10 pm
Forum: Valveless pulsejet forum
Topic: PyroJoes Recipe for Beginners
Replies: 209
Views: 1711798

Re: PyroJoes Recipe for Beginners

Based upon your designs, i designed a pulsejet with 4 intake's, as seen in the image included, after hopefully getting the version underneath working i'll bend the intake pipes to the front. I'm not sure whether this will work if someone could please point out any mistakes that would be very appreci...
by Joris
Fri Mar 04, 2016 12:01 am
Forum: Valveless pulsejet forum
Topic: Lockwood-H pulsejet with variations will it work?
Replies: 22
Views: 5316

Re: Lockwood-H pulsejet with variations will it work?

I've attempted to run it with tipping the gas, but it flamed out unfortunately.
Link to the attempt videos below.
https://www.youtube.com/watch?v=9Eh1fDf ... e=youtu.be
by Joris
Sat Feb 20, 2016 11:59 pm
Forum: Valved pulsejet forum
Topic: Argus AS 014 valve
Replies: 1
Views: 1461

Re: Argus AS 014 valve

Found it!
by Joris
Thu Feb 18, 2016 11:36 am
Forum: Valved pulsejet forum
Topic: Argus AS 014 valve
Replies: 1
Views: 1461

Argus AS 014 valve

I'm planning on building a full size AS 014 pulsejet in the near future. I haven't been able to find the exact designs i need for the valve but i think i've figured out how thick the steel should be (i used the size of the valve and a drawing of the valve which showed how many reed valves there were...
by Joris
Wed Feb 17, 2016 11:31 am
Forum: Valveless pulsejet forum
Topic: Lockwood-H pulsejet with variations will it work?
Replies: 22
Views: 5316

Re: Lockwood-H pulsejet with variations will it work?

Don't worry!
i was wearing custom made earplugs for the occasion!
And thanks!
by Joris
Thu Feb 11, 2016 7:21 am
Forum: Valveless pulsejet forum
Topic: Lockwood-H pulsejet with variations will it work?
Replies: 22
Views: 5316

Re: Lockwood-H pulsejet with variations will it work?

https://www.youtube.com/watch?v=S57D4J8ResU

i've presented it at my school (it was for a school project) so i was able to run it for a longer time, it ran pretty good till my tank froze over and it flamed out.
by Joris
Wed Feb 03, 2016 1:54 pm
Forum: Valveless pulsejet forum
Topic: Lockwood-H pulsejet with variations will it work?
Replies: 22
Views: 5316

Re: Lockwood-H pulsejet with variations will it work?

By doubling the gas input and an extra leafblower (replaced mine with one that varied in strength) I GOT IT STARTED. It works perfect now, i couldn't run it for too long because of my neighbours (did it in my backyard). Vid: https://www.youtube.com/watch?v=2gkdweAOs00 Thanks to you Mike and Metiz, T...
by Joris
Tue Feb 02, 2016 9:48 pm
Forum: Valveless pulsejet forum
Topic: Lockwood-H pulsejet with variations will it work?
Replies: 22
Views: 5316

Re: Lockwood-H pulsejet with variations will it work?

Update again, I got it running for a bit 10-15 sec but it stopped i think this was due to being out of gas not completely sure.
I think i'm gonna have to get even more gas tomorrow, probably fill up my big tank.
by Joris
Tue Feb 02, 2016 6:14 pm
Forum: Valveless pulsejet forum
Topic: Lockwood-H pulsejet with variations will it work?
Replies: 22
Views: 5316

Re: Lockwood-H pulsejet with variations will it work?

Update, Got it working on full power with more gas, it still didn't sustain though. The force was great enough to blow back my leafblower.